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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup powerpc_start
*
* @brief System low level start.
*/
/*
* Copyright (c) 2010 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LIBBSP_POWERPC_SHARED_START_H
#define LIBBSP_POWERPC_SHARED_START_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup RTEMSBSPsPowerPCSharedStart PowerPC System Start
*
* @ingroup RTEMSBSPsPowerPCShared
*
* @brief PowerPC low level start.
*
* @{
*/
#define BSP_START_TEXT_SECTION __attribute__((section(".bsp_start_text")))
#define BSP_START_DATA_SECTION __attribute__((section(".bsp_start_data")))
/**
* @brief System start entry.
*/
void _start(void);
/**
* Zeros @a byte_count bytes starting at @a begin.
*
* It wraps around in case of an address overflow. The stack will not be used.
* The code is position independent. It uses the data cache block zero
* instruction in case the data cache is enabled. There are no alignment
* constains for @a begin and @a byte_count.
*
* @see bsp_start_zero_begin, bsp_start_zero_end, and bsp_start_zero_size.
*/
void BSP_START_TEXT_SECTION bsp_start_zero(void *begin, size_t byte_count);
/**
* @brief Symbol which equals the bsp_start_zero() code begin.
*/
extern char bsp_start_zero_begin [];
/**
* @brief Symbol which equals the bsp_start_zero() code end.
*/
extern char bsp_start_zero_end [];
/**
* @brief Symbol which equals the bsp_start_zero() code size.
*/
extern char bsp_start_zero_size [];
/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_POWERPC_SHARED_START_H */
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